Helicobacter Pylori Detected in Tap Water of Peruvian Patients with Gastric Cancer.

Objective: To evaluate the correlation between the presence of H. pylori in paired samples of tap water and gastric cancer (GC) lesion in Lima city (Peru).

Material And Methods: Gastric tissue and tap-water samples were prospectively collected from 82 Gastric Cancer who lived in Lima.

Level of tumor-infiltrating lymphocytes and density of infiltrating immune cells in different malignancies.

To correlate levels of tumor-infiltrating lymphocytes (TIL) evaluated using the International Immuno-Oncology Biomarker Working Group methodology, and both density of tumor-infiltrating immune cell and clinicopathological features in different malignancies. 209 pathological samples from gastric cancer, cervical cancer (CC), non-small-lung cancer, cutaneous melanoma (CM) and glioblastoma were tested for TIL in hematoxylin eosin, and density of CD3, CD4, CD8, CD20, CD68 and CD163 cells by digital analysis. TIL levels were higher in invasive margin compartments (IMC).

Prevalence of Infection, Its Virulent Genotypes, and Epstein-Barr Virus in Peruvian Patients With Chronic Gastritis and Gastric Cancer.

Purpose: (HP) and Epstein Barr virus (EBV) infections induce chronic gastritis (CG) and are accepted carcinogenics of gastric cancer (GC). Our objective for this study was to determine the prevalence of these agents and clinicopathological features of GC and CG associated with the infection.

Patients And Methods: A single-center cohort of 375 Peruvian patients with GC and 165 control subjects with CG were analyzed.